Grease Reduction & Pretreatment

Grease Reduction
When wastewater pipes become blocked by oil and grease, a common result may be sewer overflows. Sewer overflows can have potentially serious environmental health impacts. The easiest way to help prevent overflows is to minimize grease disposal into the collection system from homes and restaurants.

Industrial Pretreatment Program

The Industrial Pretreatment Program is federally mandated by the Clean Water Act of 1977 and subsequent reauthorization. This Act requires the elimination of the discharge of pollutants into our nation’s waters. The Industrial Pretreatment Program is a component of the National Pollutants Discharge Elimination System (NPDES) Permitting Program developed under this act; the program monitors industry for regulated pollutants discharged into the sanitary sewer system in order to protect public health. Because certain industrial pollutants are not compatible with wastewater treatment procedures, it is necessary to protect the water reclamation facilities' systems through pretreatment. This helps to ensure that pollutants do not pass through the city’s treatment plants and impact our environment.

The industrial pretreatment program is also responsible for the current grease reduction initiative. Fats, oils and greases improperly disposed through the sanitary sewer system are a major cause of sewer line blockages and overflows. By working with all customer classes to reduce/eliminate grease in the system, staff will reduce the impact of grease on the system.